学案是为学生提供学习资料、引领学生开展学习活动的一种教学手段。在一定程度上能够替代小黑板、投影仪等教学手段,并且具有便于学生整理、保存和反思等优点。教师通过学案设计,创造条件使学生想学,会学。但是科学的设计,并不 Case is to provide students with learning materials, leading students to carry out learning activities as a teaching tool. To a certain extent, be able to replace small blackboards, projectors and other teaching methods, and has the advantages of facilitating students to organize, save and reflect. Teachers through the case design, create conditions for students want to learn, will learn. But scientific design is not